Soaking seeds and dipping roots with potassium humate solution can promote seed germination, promote root development, and achieve the purpose of increasing yield. Later, it was discovered that spraying the potassium rot solution on the leaf surface of plants can resist drought, lodging, increase the grain weight, and set the fruit of cotton peaches. It is also popular with farmers because of its low dosage, low cost and easy application. Drought resistance mechanism by spraying potassium humate on the leaf surface: spraying potassium humate can significantly reduce or even close the respiratory holes on the leaf surface, reduce water transpiration, and maintain water in the body. Potassium humate (especially fulvic acid) produced by it has become the main purpose of drought resistance and water saving (reducing the amount of irrigation after spraying water).

Spraying potassium humate on fruit trees can also prevent pests and diseases, increase fruit setting rate, and increase fruit sugar content. Potassium humate is a hormone in plant growth and has important significance in plant physiology. Its basic characteristics are:

① Plant respiration.

In plants, potassium humate was originally a supplement for polyphenols. Potassium humate is an oxygen activator, which can make plants respiration vigorously, plant cell division, promote plant growth and differentiation, and plant root system development.

② Enzyme activity.

Potassium humate has a special role in enzyme activity and metabolism. The results show that potassium humate can accelerate the synthesis of enzymes, promote the accumulation of soluble carbon water compounds in plants, increase osmotic pressure, enhance drought resistance, and enhance drought resistance.

③The reproduction and vitality of microorganisms.

A small amount of soluble humic acid ester is both irritating and irritating to crops. Can produce fungi, bacteria, nitrogen-fixing bacteria and other activities.

④ The absorption of nutrients by plants.

Potassium humate and its derivatives can enhance the permeability of plant cell membranes and protoplasm, allowing nutrients to enter the plant body faster and get faster absorption.